Found 2 items, similar to Umbo.
English → English (WordNet)
Definition: umbo
umbo
n : a slight rounded elevation where the malleus attaches to the
eardrum
[also:
umbones (pl)]
English → English (gcide)
Definition: Umbo
Umbo
\Um"bo\, n.; pl. L.
Umbones, E.
Umbos. [L.]
1. The boss of a shield, at or near the middle, and usually
projecting, sometimes in a sharp spike.
[1913 Webster]
2. A boss, or rounded elevation, or a corresponding
depression, in a palate, disk, or membrane; as, the umbo
in the integument of the larv[ae] of echinoderms or in the
tympanic membrane of the ear.
[1913 Webster]
3. (Zo["o]l.) One of the lateral prominence just above the
hinge of a bivalve shell.
[1913 Webster]